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Almost everywhere convergence of entangled ergodic averages [PDF]

open access: yesIntegral Equations and Operator Theory, 2016
We study pointwise convergence of entangled averages of the form \[ \frac{1}{N^k}\sum_{1\leq n_1,\ldots, n_k\leq N} T_m^{n_{\alpha(m)}}A_{m-1}T^{n_{\alpha(m-1)}}_{m-1}\ldots A_2T_2^{n_{\alpha(2)}}A_1T_1^{n_{\alpha(1)}} f, \] where $f\in L^2(X,\mu ...
Kunszenti-Kovács, Dávid
core   +5 more sources

Wavelets: convergence almost everywhere [PDF]

open access: yesMathematical communications, 1996
It has been proved in [7], using the Carleson-Hunt theorem on the pointwise convergence of Fourier series, that the wavelet inversion formula is valid pointwise for all L^p -functions, and also without restrictions on ...
H. Šikić
core   +5 more sources

Order convergence and convergence almost everywhere revisited [PDF]

open access: yes, 2010
In Analysis two modes of non-topological convergence are interesting: order convergence and convergence almost everywhere. It is proved here that oder convergence of sequences can be induced by a limit structure, even a finest one, whenever it is ...
Preuß, Gerhard
core   +3 more sources

Matrix transformations of sequences and applications in Fourier analysis [PDF]

open access: yesHeliyon
In the presented paper we consider a sequence and its Nörlud and a generalized mean derived from a matrix transformation. Furthermore, sufficient conditions for the matrix are found which implies the converges of the generalized matrix means from the ...
Ushangi Goginava   +3 more
doaj   +2 more sources

On Another Type of Convergence for Intuitionistic Fuzzy Observables

open access: yesMathematics, 2023
The convergence theorems play an important role in the theory of probability and statistics and in its application. In recent times, we studied three types of convergence of intuitionistic fuzzy observables, i.e., convergence in distribution, convergence
Katarína Čunderlíková
doaj   +1 more source

Almost everywhere convergence of spline sequences [PDF]

open access: yesIsrael Journal of Mathematics, 2020
We prove the analogue of the Martingale Convergence Theorem for polynomial spline sequences. Given a natural number $k $ and a sequence $(t_i)$ of knots in $[0,1]$ with multiplicity $\le k-1$, we let $P_n $ be the orthogonal projection onto the space of spline polynomials in $[0,1] $ of degree $k-1$ corresponding to the grid $(t_i)_{i=1}^n$. Let $X$ be
Müller, Paul F. X.   +1 more
openaire   +3 more sources

Generalized Localization and Summability Almost Everywhere of Multiple Fourier Series and Integrals

open access: yesСовременная математика: Фундаментальные направления, 2021
It is well known that Luzin’s conjecture has a positive solution for one-dimensional trigonometric Fourier series, but in the multidimensional case it has not yet found its confirmation for spherical partial sums of multiple Fourier series. Historically,
R. R. Ashurov
doaj   +1 more source

Some weak type inequalities and almost everywhere convergence of Vilenkin–Nörlund means

open access: yesJournal of Inequalities and Applications, 2023
We prove and discuss some new weak type ( 1 , 1 ) $(1,1 ) $ inequalities of maximal operators of Vilenkin–Nörlund means generated by monotone coefficients. Moreover, we use these results to prove a.e. convergence of such Vilenkin–Nörlund means.
Davit Baramidze   +3 more
doaj   +1 more source

Some applications of the Menshov–Rademacher theorem

open access: yesComptes Rendus. Mathématique, 2021
Given a sequence $(X_n)$ of real or complex random variables and a sequence of numbers $(a_n)$, an interesting problem is to determine the conditions under which the series $\sum _{n=1}^\infty a_n X_n$ is almost surely convergent.
Mukeru, Safari
doaj   +1 more source

Almost everywhere convergence of prolate spheroidal series [PDF]

open access: yesIllinois Journal of Mathematics, 2020
In this paper, we show that the expansions of functions from $L^p$-Paley-Wiener type spaces in terms of the prolate spheroidal wave functions converge almost everywhere for ...
Jaming, Philippe, Speckbacher, Michael
openaire   +3 more sources

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